- Mar 23, 2008
Hello! I am just getting around to reassembling a ST 120 movement. I had a leftover part. And now I notice the hands are slipping to the point of not moving. Okay, that is a hint! I photographed the center arbor with the tension spring so that I know how it goes back together. See photo below. There is a collar on the far left that should go on and hold that spider spring tight. However, I had an extra part (not shown) that looks like that collar in the photo. Does anyone know where that extra collar goes OR if it is also part of the center arbor assembly?? Thanks!